Not sure I understand your use case, you want to move to previous node after you create a task? what about completing this task? could you provide bit more details on what you try to achieve.
Thanks for you reply.
ProcessInstance from one node to another node must be through the transition line to just go in jBPM5.3. Now I have a process,it have four node,see diagram, below.
TaskA can transfer to TaskB,because there is a transition from TaskA to TaskB.But there is no transition from TaskB to TaskA in the process model, so processInstance can not transfer from TaskB to TaskA in normal.
Now I want to make the processInstance transfer from TaskB to TaskA in programming,but I don't know whether to support this function in jBPM5.3 and I don't know how to write code to achieve this function.